How much do addition contractors typically cost?
- Winthrop, Massachusetts Average$59,380
- Typical Range$18,000 - $100,000
- Low End - High End$8,200 - $180,000
"I needed plans for a two-car garage of a certain size and roof pitch. I could not find stock plans of specifically what I wanted. Richard was very prompt and helpful, produced the plans and arranged for an engineer's stamp."
4EAD13B3B5C9E15BD3F1172F3A0CB83F68D9B7DAB1BD2D5895C7F395BC4C840C 1. in June 2026
"We hired Pedro and his crew to renovate our basement and to say we are thrilled would be an understatement. Pedro and his crew were very professional throughout the whole project, went above and beyond and exceeded are expectations. We now have a basement that we love and the whole family enjoys!"
7011581F1861CF6A1B395A494C4AAC3FCBDD68082148A282DE089A8881D9D37E 4. in March 2026

Finish carpentry, Cabinet building and installation, Tile , and 1 more
"I Hired A-Z Finish Carpentry. They were very professional, Respectful of our space, the process was very straight forward from the beginning and Charles and his crew nailed it."
Christopher M. in January 2024

In business since 2010
Foundation, Flatwork, construction management , and 2 more
About us: "Sublime Construction Corporation is the premier professional contracting company offering a wide variety of residential and commercial services to our clients in Essex County. We are known to pay exquisite attention to detail while making your satisfaction our number one priority. At Sublime Construction Corp, concrete mastery is our hallmark. From executing flawless footings and piers to constructing robust elevator pit walls, foundation walls, slab-on-grade and slab-on-decking installations, and expertly engineered concrete retaining walls, we are your dedicated partner in all things concrete. With a keen focus on precision and craftsmanship, we build not just structures but legacies of strength and durability in the construction industry. Please call us today to schedule your appointment with Massachusetts' true professionals at work for you!"
"Just as a provious client of Joe's had told me they would be, Joe and all his associates were great. Super friendly, prompt and responsive. Joe is completely on the level about costs and the amount of time he'd need. He and the people who work with him are real pros. The quality of the work is terrific. They really cared about getting it right. I give him my higest recomendation."
F96B28548CDE7A2C7C81AEB6C20508487197143A4C17A097D3766BC7A9F56ED3 3. in September 2026
"The team showed up when they said and were fast but efficient."
8EC33AD76D01CCBFEBBF125A4D4FFFA421771F668CA03FDBCE28FC03179DA2E6 C. in December 2025
"Costs increased about 10% over estimate, work was well done and the final product was professional and well-built. Communication could have been better, the builder promised weekly meetings but that didn't happen. All in all, we were happy at the end of it all, and all questions were answered and all finishes to our satisfaction, which if you've ever worked with a contractor before, you know isn't a given. 5/5 would work with them again, the fireplace mantel and threshhold was particularly well done."
F174423444907A20B05145600DD8B960B743C75023548870468DD2075F4DD16A 7. in August 2025

Additions, Garage Remodel, Basement Remodel , and 6 more
"Excellent quality and service I would use them again"
John S. in November 2023
"They had the job done fast, and at a good price!"
5C62E091B8C0565F1BAFAD0DAD5934276143AE2CCEF7A5381E8ADA5B1A8D26D2 E. in September 2026
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Depending on the type of project, you may find subtle differences in the hiring process. Here’s a look at task-specific advice.
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Your research doesn’t stop here. Once you’ve found a few prospective companies, make an call to ask a few questions about work history, licensure and more:
In most cases, the responses you get to these three questions will give you a very good idea of the right pro for your project. If you have more than one front-runner, these additional questions can help you narrow it down.
Any good contractor will answer these questions, and most will appreciate dealing with a client that takes such an active interest in finding good service. On the other hand, if a contractor gives you a hard time with these questions, you probably want to find someone else.
Winthrop Addition & Remodeling Contractors are rated 4.7 out of 5 based on 69 reviews of 69 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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